Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Cell Junctions

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Cell Junctions

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

What is the primary function of gap junctions in animal cells?

They provide structural support to the cell membrane.

They prevent the passage of molecules between cells.

They anchor cells to the extracellular matrix.

They allow direct communication between adjacent cells.

Previous problemNext problem

Verified step by step guidance

Understand the structure of gap junctions: Gap junctions are specialized intercellular connections that form channels between adjacent animal cells.

Recognize the components: Each gap junction channel is composed of two connexons, which are themselves made up of six protein subunits called connexins.

Identify the primary function: The main role of gap junctions is to facilitate direct communication between adjacent cells by allowing the passage of ions, metabolites, and small signaling molecules.

Differentiate from other cell junctions: Unlike tight junctions, which prevent the passage of molecules, or desmosomes, which provide structural support, gap junctions specifically enable intercellular communication.

Apply the concept: In tissues such as cardiac muscle, gap junctions are crucial for the synchronized contraction of cells by allowing the rapid spread of electrical signals.